Solve the quadratic equation by completing the square.x2 - 8x = 15
A. {4 ± 
}
B. {8 ± 
}
C. {-4 ± 
}
D. {4 ± 
}
Answer: A
Mathematics
You might also like to view...
Solve the problem.The cross-sectional area of a cylinder is given by A = ?D2/4, where D is the cylinder diameter. Find the tolerance range of D such that 
< 0.01 as long as Dmin < D < Dmax.
A. Dmin = 3.567, Dmax = 3.570 B. Dmin = 3.558, Dmax = 3.570 C. Dmin = 3.567, Dmax = 3.578 D. Dmin = 3.558, Dmax = 3.578
Mathematics
Identify the equation as either an identity or not.
= cot 2x cot x
A. Identity B. Not an identity
Mathematics
Find an angle ? between 0° and 90° having the specified function value. Round your answer to the nearest hundredth of a degree.sec ? ? 4.505
A. -12.52° B. 12.83° C. 12.52° D. 77.17°
Mathematics
Solve the inequality and graph the solution set on a number line.
< 8
A. (-?, -2) ? 
B. 
C. ?
D. 
? (2, ?)
Mathematics